<template>
  <div>
    <sec-tree
      ref="tree"
      node-key="id"
      highlight-current
      show-checkbox
      default-expand-all
      :data="data"
      :props="defaultProps"
    ></sec-tree>
    <div class="mt20">
      <sec-btn @click="getCheckedNodes">通过 node 获取</sec-btn>
      <sec-btn @click="getCheckedKeys">通过 key 获取</sec-btn>
      <sec-btn @click="setCheckedNodes">通过 node 设置</sec-btn>
      <sec-btn @click="setCheckedKeys">通过 key 设置</sec-btn>
      <sec-btn @click="resetChecked">清空</sec-btn>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      data: [{
        id: 1,
        label: '一级 1',
        children: [{
          id: 4,
          label: '二级 1-1',
          children: [{
            id: 9,
            label: '三级 1-1-1',
          }, {
            id: 10,
            label: '三级 1-1-2',
          }],
        }],
      }, {
        id: 2,
        label: '一级 2',
        children: [{
          id: 5,
          label: '二级 2-1',
        }, {
          id: 6,
          label: '二级 2-2',
        }],
      }, {
        id: 3,
        label: '一级 3',
        children: [{
          id: 7,
          label: '二级 3-1',
        }, {
          id: 8,
          label: '二级 3-2',
        }],
      }],
      defaultProps: {
        children: 'children',
        label: 'label',
      },
    };
  },
  methods: {
    getCheckedNodes() {
      console.log(this.$refs.tree.getCheckedNodes());
    },
    getCheckedKeys() {
      console.log(this.$refs.tree.getCheckedKeys());
    },
    setCheckedNodes() {
      this.$refs.tree.setCheckedNodes([{
        id: 5,
        label: '二级 2-1',
      }, {
        id: 9,
        label: '三级 1-1-1',
      }]);
    },
    setCheckedKeys() {
      this.$refs.tree.setCheckedKeys([3]);
    },
    resetChecked() {
      this.$refs.tree.setCheckedKeys([]);
    },
  },
};
</script>
